Gwynne L. Chandler
Fish Biologist
Air, Water and Aquatic Environments
322 East Front Street, Suite 401
Boise, ID 83702
United States
Boise, ID 83702
United States
Phone
208-373-4372
Current Research
Database development and support for aquatics research. Development of web delivery tools to promote the sharing of data and current research results.Development of database management and analysis tools.Development of protocols for sampling stream temperatures using digital dataloggers.Development of stream temperature macros for import, QA/QC, and summary of data collected with digital temperature recorders.
Past Research
Research is important simply because the world around us is in constant change. Temperature data is easy and relatively inexpensive to collect but combersum to organize and analyze in a timely manner. Therefore on the stream temperature front we are data rich and information poor. Development of tools for managers and other researchers to use to expedite and organize stream temperature data on a temporal and spatial scale will allow us to utilize the data already available. This will give those on the management side the ability to make more informed decisions. Those in research will be able to use this information to better formulate questions and ultimately bring in the biological data. Tools that allow us to standardize the way the data is stored also opens up data sharing on a much larger scale.
Research Interest
My research interests focus on the development of models that can be used to help explain the current and future conditions of the stream system and the ultimate challenges climate change may bring. I hope to learn more about the modeling process and also would like to bring in the biological component to the stream temperature network we are now working on.
Why This Research Is Important
Development of a regional stream temperature database for use in model development.Assisted in development of a database that will be used to model food web changes in an Idaho reservoir.Writing of computer macros to import and summarize stream temperatures.
Education
- University of Wisconsin at Stevens Point, B.S., Water Resources and Biology, 1984
- University of Idaho, M.S., Fisheries Management, 1987
Featured Publications
- Isaak, Daniel J.; Luce, Charles H.; Rieman, Bruce E.; Nagel, David E.; Peterson, Erin E.; Horan, Dona L.; Parkes, Sharon; Chandler, Gwynne L.. 2010. Effects of climate change and wildfire on stream temperatures and salmonid thermal habitat in a mountain river network
- Dunham, Jason; Chandler, Gwynne; Rieman, Bruce; Martin, Don. 2005. Measuring stream temperature with digital data loggers: a user's guide
- Dunham, Jason B.; Rieman, Bruce; Chandler, Gwynne. 2001. Development of field-based models of suitable thermal regimes for interior Columbia Basin salmonids
- Overton, C. Kerry; Chandler, Gwynne L.; Pisano, Janice A.. 1994. Northern/Intermountain Regions' fish habitat inventory: Grazed, rested, and ungrazed reference stream reaches, Silver King Creek, California
Other Publications
- Isaak, Daniel J.; Luce, Charles H.; Horan, Dona L.; Chandler, Gwynne L.; Wollrab, Sherry P.; Dubois, William B.; Nagel, David E.. 2020. Thermal regimes of perennial rivers and streams in the western United States
- Thurow, Russell F.; Peterson, James T.; Chandler, Gwynne L.; Moffitt, Christine M.; Bjornn, Theodore C.. 2020. Concealment of juvenile bull trout in response to temperature, light, and substrate: Implications for detection
- Isaak, Daniel J.; Luce, Charles H.; Horan, Dona L.; Chandler, Gwynne; Wollrab, Sherry; Nagel, David E.. 2018. Global warming of salmon and trout rivers in the northwestern U.S.: Road to ruin or path through purgatory?
- Isaak, Daniel J.; Young, Michael K.; McConnell, Callie ; Roper, Brett B.; Archer, Eric K.; Staab, Brian ; Hirsch, Christine ; Nagel, David E.; Schwartz, Michael K.; Chandler, Gwynne L.. 2018. Crowd-sourced databases as essential elements for Forest Service partnerships and aquatic resource conservation
- Isaak, Daniel J.; Luce, Charles H.; Chandler, Gwynne L.; Horan, Dona L.; Wollrab, Sherry P.. 2018. Principal components of thermal regimes in mountain river networks
- Isaak, Daniel J.; Wenger, Seth J.; Peterson, Erin E.; Ver Hoef, Jay M.; Nagel, David E.; Luce, Charles H.; Hostetler, Steven W.; Dunham, Jason B.; Roper, Brett B.; Wollrab, Sherry P.; Chandler, Gwynne L.; Horan, Dona L.; Parkes-Payne, Sharon. 2017. The NorWeST summer stream temperature model and scenarios for the western U.S.: A crowd-sourced database and new geospatial tools foster a user community and predict broad climate warming of rivers and streams
- Wenger, Seth J.; Isaak, Daniel J.; Dunham, Jason B.; Fausch, Kurt D.; Luce, Charlie; Neville, Helen M.; Rieman, Bruce E.; Young, Michael K.; Nagel, David E.; Horan, Dona L.; Chandler, Gwynne L.. 2011. Role of climate and invasive species in structuring trout distributions in the interior Columbia River Basin, USA
- Isaak, D. J.; Wollrab, S.; Horan, D.; Chandler, G.. 2011. Climate change effects on stream and river temperatures across the northwest U.S. from 1980-2009 and implications for salmonid fishes
Research Highlights

Monitoring the impact of changing climate on western rivers and cold water species
Year: 2018
While coldwater fish such as salmon and trout can adjust to slightly warmer-than-normal temperatures for short periods, abnormally high temperatures for prolonged periods lower oxygen levels, increase the likelihood of deadly diseases, and cause life-threatening physiological stress.